linux/include/net/nfc/hci.h
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   1/*
   2 * Copyright (C) 2011  Intel Corporation. All rights reserved.
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License as published by
   6 * the Free Software Foundation; either version 2 of the License, or
   7 * (at your option) any later version.
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18#ifndef __NET_HCI_H
  19#define __NET_HCI_H
  20
  21#include <linux/skbuff.h>
  22
  23#include <net/nfc/nfc.h>
  24
  25struct nfc_hci_dev;
  26
  27struct nfc_hci_ops {
  28        int (*open) (struct nfc_hci_dev *hdev);
  29        void (*close) (struct nfc_hci_dev *hdev);
  30        int (*load_session) (struct nfc_hci_dev *hdev);
  31        int (*hci_ready) (struct nfc_hci_dev *hdev);
  32        /*
  33         * xmit must always send the complete buffer before
  34         * returning. Returned result must be 0 for success
  35         * or negative for failure.
  36         */
  37        int (*xmit) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
  38        int (*start_poll) (struct nfc_hci_dev *hdev,
  39                           u32 im_protocols, u32 tm_protocols);
  40        void (*stop_poll) (struct nfc_hci_dev *hdev);
  41        int (*dep_link_up)(struct nfc_hci_dev *hdev, struct nfc_target *target,
  42                           u8 comm_mode, u8 *gb, size_t gb_len);
  43        int (*dep_link_down)(struct nfc_hci_dev *hdev);
  44        int (*target_from_gate) (struct nfc_hci_dev *hdev, u8 gate,
  45                                 struct nfc_target *target);
  46        int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate,
  47                                           struct nfc_target *target);
  48        int (*im_transceive) (struct nfc_hci_dev *hdev,
  49                              struct nfc_target *target, struct sk_buff *skb,
  50                              data_exchange_cb_t cb, void *cb_context);
  51        int (*tm_send)(struct nfc_hci_dev *hdev, struct sk_buff *skb);
  52        int (*check_presence)(struct nfc_hci_dev *hdev,
  53                              struct nfc_target *target);
  54        int (*event_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
  55                              struct sk_buff *skb);
  56        void (*cmd_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
  57                            struct sk_buff *skb);
  58        int (*fw_download)(struct nfc_hci_dev *hdev, const char *firmware_name);
  59        int (*discover_se)(struct nfc_hci_dev *dev);
  60        int (*enable_se)(struct nfc_hci_dev *dev, u32 se_idx);
  61        int (*disable_se)(struct nfc_hci_dev *dev, u32 se_idx);
  62        int (*se_io)(struct nfc_hci_dev *dev, u32 se_idx,
  63                      u8 *apdu, size_t apdu_length,
  64                      se_io_cb_t cb, void *cb_context);
  65};
  66
  67/* Pipes */
  68#define NFC_HCI_DO_NOT_CREATE_PIPE      0x81
  69#define NFC_HCI_INVALID_PIPE    0x80
  70#define NFC_HCI_INVALID_GATE    0xFF
  71#define NFC_HCI_INVALID_HOST    0x80
  72#define NFC_HCI_LINK_MGMT_PIPE  0x00
  73#define NFC_HCI_ADMIN_PIPE      0x01
  74
  75struct nfc_hci_gate {
  76        u8 gate;
  77        u8 pipe;
  78};
  79
  80struct nfc_hci_pipe {
  81        u8 gate;
  82        u8 dest_host;
  83};
  84
  85#define NFC_HCI_MAX_CUSTOM_GATES        50
  86#define NFC_HCI_MAX_PIPES               127
  87struct nfc_hci_init_data {
  88        u8 gate_count;
  89        struct nfc_hci_gate gates[NFC_HCI_MAX_CUSTOM_GATES];
  90        char session_id[9];
  91};
  92
  93typedef int (*xmit) (struct sk_buff *skb, void *cb_data);
  94
  95#define NFC_HCI_MAX_GATES               256
  96
  97/*
  98 * These values can be specified by a driver to indicate it requires some
  99 * adaptation of the HCI standard.
 100 *
 101 * NFC_HCI_QUIRK_SHORT_CLEAR - send HCI_ADM_CLEAR_ALL_PIPE cmd with no params
 102 */
 103enum {
 104        NFC_HCI_QUIRK_SHORT_CLEAR       = 0,
 105};
 106
 107struct nfc_hci_dev {
 108        struct nfc_dev *ndev;
 109
 110        u32 max_data_link_payload;
 111
 112        bool shutting_down;
 113
 114        struct mutex msg_tx_mutex;
 115
 116        struct list_head msg_tx_queue;
 117
 118        struct work_struct msg_tx_work;
 119
 120        struct timer_list cmd_timer;
 121        struct hci_msg *cmd_pending_msg;
 122
 123        struct sk_buff_head rx_hcp_frags;
 124
 125        struct work_struct msg_rx_work;
 126
 127        struct sk_buff_head msg_rx_queue;
 128
 129        struct nfc_hci_ops *ops;
 130
 131        struct nfc_llc *llc;
 132
 133        struct nfc_hci_init_data init_data;
 134
 135        void *clientdata;
 136
 137        u8 gate2pipe[NFC_HCI_MAX_GATES];
 138        struct nfc_hci_pipe pipes[NFC_HCI_MAX_PIPES];
 139
 140        u8 sw_romlib;
 141        u8 sw_patch;
 142        u8 sw_flashlib_major;
 143        u8 sw_flashlib_minor;
 144
 145        u8 hw_derivative;
 146        u8 hw_version;
 147        u8 hw_mpw;
 148        u8 hw_software;
 149        u8 hw_bsid;
 150
 151        int async_cb_type;
 152        data_exchange_cb_t async_cb;
 153        void *async_cb_context;
 154
 155        u8 *gb;
 156        size_t gb_len;
 157
 158        unsigned long quirks;
 159};
 160
 161/* hci device allocation */
 162struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
 163                                            struct nfc_hci_init_data *init_data,
 164                                            unsigned long quirks,
 165                                            u32 protocols,
 166                                            const char *llc_name,
 167                                            int tx_headroom,
 168                                            int tx_tailroom,
 169                                            int max_link_payload);
 170void nfc_hci_free_device(struct nfc_hci_dev *hdev);
 171
 172int nfc_hci_register_device(struct nfc_hci_dev *hdev);
 173void nfc_hci_unregister_device(struct nfc_hci_dev *hdev);
 174
 175void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata);
 176void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev);
 177
 178void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err);
 179
 180int nfc_hci_result_to_errno(u8 result);
 181void nfc_hci_reset_pipes(struct nfc_hci_dev *dev);
 182void nfc_hci_reset_pipes_per_host(struct nfc_hci_dev *hdev, u8 host);
 183
 184/* Host IDs */
 185#define NFC_HCI_HOST_CONTROLLER_ID      0x00
 186#define NFC_HCI_TERMINAL_HOST_ID        0x01
 187#define NFC_HCI_UICC_HOST_ID            0x02
 188
 189/* Host Controller Gates and registry indexes */
 190#define NFC_HCI_ADMIN_GATE 0x00
 191#define NFC_HCI_ADMIN_SESSION_IDENTITY  0x01
 192#define NFC_HCI_ADMIN_MAX_PIPE          0x02
 193#define NFC_HCI_ADMIN_WHITELIST         0x03
 194#define NFC_HCI_ADMIN_HOST_LIST         0x04
 195
 196#define NFC_HCI_LOOPBACK_GATE           0x04
 197
 198#define NFC_HCI_ID_MGMT_GATE            0x05
 199#define NFC_HCI_ID_MGMT_VERSION_SW      0x01
 200#define NFC_HCI_ID_MGMT_VERSION_HW      0x03
 201#define NFC_HCI_ID_MGMT_VENDOR_NAME     0x04
 202#define NFC_HCI_ID_MGMT_MODEL_ID        0x05
 203#define NFC_HCI_ID_MGMT_HCI_VERSION     0x02
 204#define NFC_HCI_ID_MGMT_GATES_LIST      0x06
 205
 206#define NFC_HCI_LINK_MGMT_GATE          0x06
 207#define NFC_HCI_LINK_MGMT_REC_ERROR     0x01
 208
 209#define NFC_HCI_RF_READER_B_GATE                        0x11
 210#define NFC_HCI_RF_READER_B_PUPI                        0x03
 211#define NFC_HCI_RF_READER_B_APPLICATION_DATA            0x04
 212#define NFC_HCI_RF_READER_B_AFI                         0x02
 213#define NFC_HCI_RF_READER_B_HIGHER_LAYER_RESPONSE       0x01
 214#define NFC_HCI_RF_READER_B_HIGHER_LAYER_DATA           0x05
 215
 216#define NFC_HCI_RF_READER_A_GATE                0x13
 217#define NFC_HCI_RF_READER_A_UID                 0x02
 218#define NFC_HCI_RF_READER_A_ATQA                0x04
 219#define NFC_HCI_RF_READER_A_APPLICATION_DATA    0x05
 220#define NFC_HCI_RF_READER_A_SAK                 0x03
 221#define NFC_HCI_RF_READER_A_FWI_SFGT            0x06
 222#define NFC_HCI_RF_READER_A_DATARATE_MAX        0x01
 223
 224#define NFC_HCI_TYPE_A_SEL_PROT(x)              (((x) & 0x60) >> 5)
 225#define NFC_HCI_TYPE_A_SEL_PROT_MIFARE          0
 226#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443        1
 227#define NFC_HCI_TYPE_A_SEL_PROT_DEP             2
 228#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP    3
 229
 230/* Generic events */
 231#define NFC_HCI_EVT_HCI_END_OF_OPERATION        0x01
 232#define NFC_HCI_EVT_POST_DATA                   0x02
 233#define NFC_HCI_EVT_HOT_PLUG                    0x03
 234
 235/* Generic commands */
 236#define NFC_HCI_ANY_SET_PARAMETER       0x01
 237#define NFC_HCI_ANY_GET_PARAMETER       0x02
 238#define NFC_HCI_ANY_OPEN_PIPE           0x03
 239#define NFC_HCI_ANY_CLOSE_PIPE          0x04
 240
 241/* Reader RF gates events */
 242#define NFC_HCI_EVT_READER_REQUESTED    0x10
 243#define NFC_HCI_EVT_END_OPERATION       0x11
 244
 245/* Reader Application gate events */
 246#define NFC_HCI_EVT_TARGET_DISCOVERED   0x10
 247
 248/* receiving messages from lower layer */
 249void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
 250                           struct sk_buff *skb);
 251void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
 252                          struct sk_buff *skb);
 253void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
 254                            struct sk_buff *skb);
 255void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb);
 256
 257/* connecting to gates and sending hci instructions */
 258int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate,
 259                         u8 pipe);
 260int nfc_hci_disconnect_gate(struct nfc_hci_dev *hdev, u8 gate);
 261int nfc_hci_disconnect_all_gates(struct nfc_hci_dev *hdev);
 262int nfc_hci_get_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
 263                      struct sk_buff **skb);
 264int nfc_hci_set_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
 265                      const u8 *param, size_t param_len);
 266int nfc_hci_send_cmd(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
 267                     const u8 *param, size_t param_len, struct sk_buff **skb);
 268int nfc_hci_send_cmd_async(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
 269                           const u8 *param, size_t param_len,
 270                           data_exchange_cb_t cb, void *cb_context);
 271int nfc_hci_send_event(struct nfc_hci_dev *hdev, u8 gate, u8 event,
 272                       const u8 *param, size_t param_len);
 273int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate);
 274u32 nfc_hci_sak_to_protocol(u8 sak);
 275
 276#endif /* __NET_HCI_H */
 277